volumetric efficiency
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Cummins 12V vs 24V... what do people think?
Is it true that the purpose of the 24V is entirely to reduce emissions? Traditionally four valve cylinder heads are used to achieve: 1) Lower reciprocating valvetrain mass per cam lobe. 2) Straight-shot port geometry. 3) Tumble turbulence during the intake stroke. Until recently I'd never...- The Tow Rat
- Thread
- 12 valve 24 valve emissions tumble and swirl valvetrain forces volumetric efficiency
- Replies: 9
- Forum: Engine and Performance
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